TW200515802A - Method of conversion of image from low-resolution into high-resolution - Google Patents

Method of conversion of image from low-resolution into high-resolution

Info

Publication number
TW200515802A
TW200515802A TW092130173A TW92130173A TW200515802A TW 200515802 A TW200515802 A TW 200515802A TW 092130173 A TW092130173 A TW 092130173A TW 92130173 A TW92130173 A TW 92130173A TW 200515802 A TW200515802 A TW 200515802A
Authority
TW
Taiwan
Prior art keywords
resolution
pixels
image
low
processing pixel
Prior art date
Application number
TW092130173A
Other languages
Chinese (zh)
Other versions
TWI225749B (en
Inventor
Chao-Chih Huang
Ching-Yeh Lu
Original Assignee
Realtek Semiconductor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Realtek Semiconductor Corp filed Critical Realtek Semiconductor Corp
Priority to TW092130173A priority Critical patent/TWI225749B/en
Priority to US10/975,461 priority patent/US7298928B2/en
Application granted granted Critical
Publication of TWI225749B publication Critical patent/TWI225749B/en
Publication of TW200515802A publication Critical patent/TW200515802A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40068—Modification of image resolution, i.e. determining the values of picture elements at new relative positions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4007—Interpolation-based scaling, e.g. bilinear interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution

Abstract

A method of conversion of image from low-resolution into high-resolution. The method converts a low-resolution source image with M*N pixels into a high-resolution target image with KM*HN pixels. The method first chooses a processing pixel from the source image and analyses the processing pixel and its neighborhood pixels to choose a character pattern. Then, the method calculates a compensation matrix according to the value of the processing pixel and the character pattern. Finally, the method calculates K*H target pixels according to the value of the processing pixel and the compensation matrix. The method repeats the above steps until all the pixels of the source image are processed.
TW092130173A 2003-10-30 2003-10-30 Method of conversion of image from low-resolution into high-resolution TWI225749B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW092130173A TWI225749B (en) 2003-10-30 2003-10-30 Method of conversion of image from low-resolution into high-resolution
US10/975,461 US7298928B2 (en) 2003-10-30 2004-10-29 Method for converting image from low resolution into high resolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW092130173A TWI225749B (en) 2003-10-30 2003-10-30 Method of conversion of image from low-resolution into high-resolution

Publications (2)

Publication Number Publication Date
TWI225749B TWI225749B (en) 2004-12-21
TW200515802A true TW200515802A (en) 2005-05-01

Family

ID=34588331

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092130173A TWI225749B (en) 2003-10-30 2003-10-30 Method of conversion of image from low-resolution into high-resolution

Country Status (2)

Country Link
US (1) US7298928B2 (en)
TW (1) TWI225749B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7468735B2 (en) * 2003-07-24 2008-12-23 Sony Corporation Transitioning between two high resolution images in a slideshow
JP4533067B2 (en) * 2004-09-27 2010-08-25 キヤノン株式会社 Image processing apparatus, image processing method, and program
US7738712B2 (en) * 2006-01-04 2010-06-15 Aten International Co., Ltd. Mixing 2-D gradient-difference and interpolation/decimation method and device for scaling a digital image
TWI413944B (en) * 2008-12-16 2013-11-01 Innolux Corp Image compensation method and image compensation module
US8666180B2 (en) 2009-12-04 2014-03-04 Stc.Unm System and methods of compressed sensing as applied to computer graphics and computer imaging
US10311548B2 (en) 2017-09-05 2019-06-04 Microsoft Technology Licensing, Llc Scaling render targets to a higher rendering resolution to display higher quality video frames

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720745A (en) * 1983-06-22 1988-01-19 Digivision, Inc. Method and apparatus for enhancing video displays
JP2793466B2 (en) * 1992-06-11 1998-09-03 インターナショナル・ビジネス・マシーンズ・コーポレイション Variable image enlargement method and apparatus
KR100360206B1 (en) 1992-12-10 2003-02-11 소니 가부시끼 가이샤 Image signal converter
JPH0750752A (en) * 1993-08-06 1995-02-21 Fuji Xerox Co Ltd Method and device for converting picture density
JP3195142B2 (en) * 1993-10-29 2001-08-06 キヤノン株式会社 Image processing method and apparatus
US6157749A (en) * 1997-03-05 2000-12-05 Canon Kabushiki Kaisha Image processing apparatus and method, and storing medium
US6281875B1 (en) * 1998-04-29 2001-08-28 Canon Kabushiki Kaisha Gradient-based pixel interpolation
US6222944B1 (en) 1998-05-07 2001-04-24 Sarnoff Corporation Down-sampling MPEG image decoder
US6178272B1 (en) * 1999-02-02 2001-01-23 Oplus Technologies Ltd. Non-linear and linear method of scale-up or scale-down image resolution conversion
US6590938B1 (en) 1999-09-30 2003-07-08 Conexant Systems, Inc. DCT domain conversion of a higher definition signal to lower definition signal
US6812935B1 (en) * 2000-03-30 2004-11-02 Intel Corporation Scaling images for display

Also Published As

Publication number Publication date
US20070053613A1 (en) 2007-03-08
US7298928B2 (en) 2007-11-20
TWI225749B (en) 2004-12-21

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